Heck, that's just the beginning of the fun and games for the defense and security contractors.

. . . to Innovators, Entrepreneurs and Funds File Amicus in Support of Google in Oracle v. Google Appeal.

The military command lied to Ender by pretending he was still in a training exercise, but they did not lie about the need to "end them." Without communication with the aliens, there was no way for the humans to know that the queens had realized their mistake and were perfectly willing to live in peaceful coexistence. Given the sheer luck that allowed Razer to win the previous battle for Earth, they were reasonably certain Earth would never survive another attack.

It was only later that Ender was able to communicate with the remaining queen and learn the full story. He was upset about being lied to and having caused so much death, but I think he understood why they lied to him. He didn't like it, mind you, but he understood it was the only way to get him (or anyone) to do what he did.

My memory is that Ender was told that they were looking for someone to lead the fleet that had departed for the alien frontier decades before. They simply neglected to tell him that they made their decision and the fleet he was leading in the training exercises was the actual fleet.

I laughed so hard, I spit up yesterday's milk. And yes, I just spent the last four hours playing cIV.